php打印九九乘法表

<?php
echo "<table width='600' border='1'>";

for($j=1;$j<=9;$j++){

echo "<tr>";

for($i=1;$i<=$j;$i++){

echo "<td>{$i}*{$j}=".($i*$j)."</td>";

}

echo "</tr>";

}

echo "</table>";

echo '<hr/>';

echo "<table width='600' border='1'>";

for($j=9;$j>=1;$j--){

echo "<tr>";

for($i=1;$i<=$j;$i++){

echo "<td>{$i}*{$j}=".($i*$j)."</td>";

}

echo "</tr>";

}

echo "</table>";

echo '<hr/>';
echo "<table width='600' border='1'>";

for($j=9;$j>=1;$j--){

echo "<tr>";

for($z=0;$z<9-$j;$z++){

echo "<td> </td>";

}

for($i=1;$i<=$j;$i++){

echo "<td>{$i}*{$j}=".($i*$j)."</td>";

}

 

echo "</tr>";

}

echo "</table>";
echo '<hr/>';

echo "<table width='600' border='1'>";

for($j=1;$j<=9;$j++){

echo "<tr>";

for($z=0;$z<9-$j;$z++){

echo "<td> </td>";

}

for($i=$j;$i>=1;$i--){

echo "<td>{$i}*{$j}=".($i*$j)."</td>";

}

 

echo "</tr>";

}

echo "</table>";